Crescitelli, F.; Karvaly, B. (1983). The Gecko Visual Pigment: Its Photosensitivity and the Effects of Chloride and Nitrate Ions. Proceedings of the Royal Society B: Biological Sciences, 220(1218), 69–87.
doi:10.1098/rspb.1983.0089
url to share this paper:
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research